[boost] Re: Re: Newbie to Regex simple test failure...

From: Richard Latter (richard_l_at_[hidden])
Date: 2004-05-20 18:28:32

Hello John,

Many thanks for the information you have provided. I am looking to use
wildcards for my program, but not just for file matching.  To overcome this
I will write a wrapper function to convert * in to .*, but that should not
be too difficult.  Then I guess it's a case of RTFM for the rest.  To solve
your problem of wildcarding, may I suggest that you use Unix over DOS or
perhaps create a couple of flags to incorprate either.

I have noticed somthing else however with the current build.  I'm getting
C4786 warnings all over the place when I compile.  I have tried putting
#pragma warning(disable : 4786) at the start of my program, but this appears
to have no effect.  I wonder if it's something to do with the library.
Remember I'm ising mscv6.

Regards,

Richard

"John Maddock" <john_at_[hidden]> wrote in message
news:014b01c43d89$1aec8aa0$307b0252_at_fuji...
> > Many thanks for your help and advice here.  It helped me to solve my
> > problem, the expression I was passing to the function was not valid.
> > However, I have one more question.  I know this is regular expressions
> here,
> > but why am I not allowed to use "*tart* instead of "(.*)tart(.*)".
>
> Or you could use .*tart.*
>
> Boost regex implements three types of patterns:
>
> Perl regular expressions (what you get by default)
> POSIX extended regular expressions.
> POSIX basic regular expressions.
>
> The latter two are available by passing the appropriate flags to the regex
> constructor, for example:
>
> boost::regex e("\(.*\)abc", boost::regex::basic | boost::regex::icase);
>
> Is a case insensitive, POSIX basic expression.
>
> In none of three supported grammars is *tart* a valid expression.
>
> I assume you were wanting a wildcard for matching filenames?  If so that's
> on my list of things to implement as well, but there are two competing and
> rather incompatible forms to choose from (Unix style wildcards, and MS-DOS
> style), which muddies the waters somewhat.
>
> John.
>
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